Gas-igniter.



No. 831,235. PATENT@ MAR.10, 1908.

' G. T.'G1oRG1.

l GAs IGNITER. I 'APPLICATION FILED 00125, 1904. RENEWBD FEB. 1, 1908.

s SHEETS-SHEET 2.

UNITED STATES PATENT OFFIOE.

CARLO TOMMASO GIORGI, OF FLORENCE, ITALY.

GAS-IGN ITER.

Specification of Letters Patent.

Patented March 10, 1908.

Application filed. October 5, 1904, Serial No. 227,326. Renewed February 1, 1908. Serial No. 413,842.

To all whom it may concern.'

Be it known that I, CARLO TOMMASO GIORGI, a Subj ect of the King of Italy, and a resident of Florence, Italy, have invented a new and Improved Gas-Igniter, of which the following is a full, clear, and eXact description. y

My invention relates to electric igniters and admits of general use, but applies more particularly to gas igniters of the kind used for lighting edilices.

My invention is not limited to the particular construction shown and described, but as outlined by the scope of the appended claims. y

Reference is to be had to the accompanying drawings forming a part of this specication, in which similar characters of reference indicate corresponding parts in all the iig ures v Figure l is a side elevation partly in section showing a gas burner equipped with my invention, substantially on the line 1-1 in Fig. 2, Fig, 2 is a horizontal section through the same upon the line 2-2 of Fig. 1, looking in the direction of the arrow, and showing a part of the valve mechanism; and Fig. 3 is a y horizontal section upon the line 3*3 of Fig.

1, looking in the direction of the arrow, showing other'parts of the valve mechanism and means for actuating the same.

The burner is shown at 4 and is mounted upon the air tube 5, provided with air inlets 6 and with a'shade holder 7 mounted upon brackets 8, which aresupported upon the threaded member 9, these parts being of the usual or any desired construction. A tubular member 10 is provided with a comparatively thick base l0a and has a cylindrical valve seat l1 integral therewith. The valve seat is provided with apertures l2 consisting preferably of round holes extending. directly through the seat and arranged substantially in the form of a circle, as indicated by dotted lines in Fig. 2.

Mounted upon the valve seat and revoluble relatively thereto, is a valve 13 provided upon its periphery with teeth 14 separated by indentures l5, the valve thus having the general form of a pointed star. A central screw 13'b1 serves as a pivot for the starshaped valve, as willv be understood from Fig. 1. The valve is provided with holes or apertures 16, arranged substantially in the form of a circle and adapted to register with the holes or apertures 12 in the valve seat.

The spacing of the holes in the valve seat and in the valve is such that when the valve is turned a distance representing the distance apart of two consecutive teeth upon its periphery, the holes in the valve seat are brought into or thrown out of registry with those of the valve. The idea is that when the valve is moved a number of successive distances, each representing the distance apart of two consecutive teeth, the holes in the valve seat are first covered and then uncovered, the process being continuous.

A yoke 17 of substantially elliptical shape is provided with pins 18, 19 disposed in the position indicated in Fig. 2. These pins are adapted to engage the teeth 14 of the valve and to turn the saine step by step, a movement of the yoke in either of two directions carrying the valve a distance representing the distance apart of two consecutive teeth. A stern 20 is rigidly connected with the yoke 17 for the purpose of actuating the same. This stem passes loosely through a hole 21 in the tubular member 10, in order that the stem 20 and yoke 17 may have proper freedom of movement. A spiral spring 22 loosely encircles the stem 20 and lodges at one of its ends against the tubular member 10, and at its other end against the head 23 rigidly mounted upo'n the stem. The spring by its tension keeps the yoke 17 normally drawn to its eXtreme position to the left, according to the view shown in Fig. 1 that is, the head 23 is constantly pressed outward.

A movable armature 24 having preferably the forni of a plate is shown as loosely mounted upon alscrew 25, and is adapted to press the head 23 inward or toward the center of the burner. This armature is provided with a tongue 24a, extending upwardly therefrom and directly engaging the head 23. A guide screw 26 passes loosely through the aperture 27 in the armature 24 and serves to keep the vtongue 24a in proper position relatively to the head 23.

Mounted below the stem 20 is a valve plug 28, encircled by a spiral spring 29 slidably fitted into a side passage 81 which opens into the main passage 30. This valve plug is provided with a tubular portion 32, and this tubular portion is constricted at S3 and is provided with a circle of holes 34 in the center of the constricted. portion, as will be understood from Fig. 3.

A by-pass 85 communicates with the side passagev 31 and extends outwardly and upwardly therefrom. Mounted upon this byl pass is a number of blocks 36, 37 of insulating material, connected together by a screw 38. Conducting wires 39, 40 pass through the blocks of insulating materia and are supported thereby out of contact with the bypass 35. A iilament 41 of platinum wire, l preferably stranded as indicated, is mounted upon the conductors 39, 40, which are provided with platinum tips 41a for the purpose of engaging the lainent or wire. The wire 39 terminates in binding posts 42, 45a, and the wire 40 connects with a winding 42a. This winding encircles a tubular core 43, and the base 10@L of the tubular member 10 is provided with a threaded portion 3()il which iits into they upper end of the tubular core 43, the latter being threaded as shown.

The gas pipe is shown at 44, and upon the ends of the tubular core 43, which is oi iron, are integrally mounted disks 45 of the same metal. These disks serve as poles, and the winding core and poles together constitute a magnetic member which attracts the armature 24.

The action of my device is as follows: Normally the apertures 12 in the valve seat are covered by the valve 13, for the reason that the apertures 16 of the valve are out of registry with those of the seat. In this condition, no gas can pass from the pipe 44 to the burner 4j. nor can any gas pass from the pipe 44 through the tube 35, for the reason that the circle of holes 34 and the constriction 33 are not in alinement with the by-pass 35, as will 'be noted from Fig. 1. If, now, an electric current be sent through the winding 42a, so as to energize the magnet, the armature 24 will be attracted and the tongue 24a will be forced inward or toward the center of the device. The result is that the stem 20 moves the yoke 17, and the valve 13 is turned a distance representing one-half the distance apart of two of its consecutive teeth, so that the holes 16 are brought into registry with the holes 12 of the valve seat. The same movement of the armature presses the valve plug 2S inward and this brings the constriction 33 and circle of holes 34 into l such position that gas may pass upward l through the by-pass 35. The same current which energizes the winding 42a heats the stranded wire or filament 41 to incandes cence, and this causes the ignition of the gas passing upwardly through the by-pass, and the flame thus formed lights the gas passing from the burner 4. The current through the windinfT 42a being broken, the stem 20 and valve ptlug 28 spring back to their respective normal positions. The gas is thus cut oii from the by-pass, and the stranded wire or lament 41 is'no longer heated, yet the gas from the main burner continues to burn. A complete stroke of the armature back to its starting point, that is to say, its movement toward the burner and subsequent restera# tion by the spring, is necessary to move the valve a proper distance to leave the gas burnin in the main burner.

n order to extinguish the light from the main burner, another current is sent through the winding 42i1 and the armature 24 is again attracted and the valve 13 is again moved, this time in the position indicated by dotted lines in Fig. 2, so that the holes 12. are now covered and the flow of gas is stopped. This represents the condition of the burner at the time when not in use.

The net result is that it a person desires to light the gas, he merely energizes the winding 42l by sending a current through the conductors, and in order to extinguish the light, he again energizes the Winding 42, the means for completing and breaking the circuit being old and well known in the art.

Having thus described my invention, l claim as new and desire to secure by Letters Patent:

1. In a gas igniter, the combination of a burner, a valve seat provided with openings for admitting gas thereinto, a valve having the form of a star wheel revolubly mounted upon said valve seat and pro vided with openings adapted to register with those of said seat, a yoke slidably mounted and encircling said valve seat, pins mounted upon said yoke and adapted to engage said star wheel, and electrically operated mechanism connected with said yoke for actuating the same so as to bring the openings of said valve into and out of registry with the openings of said valve seat.

2. In a gas igniter, the combination of a burner provided with a main valve and with a side passage, a plug valve mounted within said side passage and provided with a constriction and with openings adjacent to said constriction, a by-pass adapted to communicate with said side passage and controllable by said plug valve, magnetic mechanism for pressing said plug valve in one direction, a spring for retracting said plug valve, means for operating said main valve, so as to turn the flow of gas on and off said burner, and means for igniting small quantities of gas passing through said by-pass toward said burner. y

3. In a gas igniter, the combination of a burner provided with a main valve seat, said main valve seat having openings there* through, a main valve revolubly mounted upon said seat and having the form of a star wheel, said main valve being provided with openings adapted to register with those of seid seat, a yoke provided with pins for en gaging said star wheel, means i'or actuating said yoke so as to turn said star wheel step by step, magnetic mechanism controllable by an electric currentforactuating said yoke, and means for igniting the gas of said burnerfwhen said openings of said valve are in registry With the openings of said seat.

4. In a gas igniter, the combination of a burner, a valve seat provided with openings for admitting gas thereinto, a side passage, mechanism connected therewith and provided with a constriction and with openings disposed adjacent to said constriction, a bypass adapted .to communicate with said side passage and controllable by said mechanism having said constriction, and means controllable electrically from a distance for actuating said mechanism so as to open and close said openings adjacent to said con` striction.

5. In a gas igniter, the combination of a burner pro vided witha main valve and with aside passage, a by-pass communicating with said side passage, a hollow member slidably mounted within said side passage and provided with a constriction and with an opening adjacent to said constriction, and magnetic mechanism controllable from a distance for controlling said member for actuating said main valve.

In testimony whereof I have signed my name to this specilication in the presence of two subscribing witnesses.

lCARLO TOMMASO GIORGI.

Witnesses:

EUGEN OPPENHEIMER, O. E, KAISER, 

